if unnamed line getting hit in mentioned time, then may be its not correct to be on short side.
If line A is getting hit in mentioned time, then takes some time in retracing and check if it pass thru above the line A to be on long side.
Note the word: 'May be' (Probables)
PS: Not all lines are trendline here.
Note: If line B is getting but not in time, that would also favour Line C. Time matters most.
So Line B dint get hit yet. Waves are favouring more to hit Line C.
Note: Once Line C get hit, all trendlines drawn no more valid with day and bar mentioned over. will post new idea post that.